CodePen Embed - Responsive table with flexbox

<div class="table">
  <div class="table-cell"></div>
  <div class="table-cell plattform">
    <h3>Platform</h3>
    <a href="" class="btn">register now</a>
  </div>
  <div class="table-cell enterprise">
    <h3>Enterprise</h3>
    <a href="" class="btn">Send us a Email</a>
  </div>
  <div class="table-cell cell-feature">Instant delivery</div>
  <div class="table-cell">
    <svg width="18" height="18" viewBox="0 0 18 18" xmlns="http://www.w3.org/2000/svg">
      <title>check_blue</title>
      <path d="M6.116 14.884c.488.488 1.28.488 1.768 0l10-10c.488-.488.488-1.28 0-1.768s-1.28-.488-1.768 0l-9.08 9.15-4.152-4.15c-.488-.488-1.28-.488-1.768 0s-.488 1.28 0 1.768l5 5z" fill="limegreen" fill-rule="evenodd"/>
    </svg>
  </div>
  <div class="table-cell">
    <svg class="enterprise-check" width="18" height="18" viewBox="0 0 18 18" xmlns="http://www.w3.org/2000/svg">
      <title>check_blue</title>
      <path d="M6.116 14.884c.488.488 1.28.488 1.768 0l10-10c.488-.488.488-1.28 0-1.768s-1.28-.488-1.768 0l-9.08 9.15-4.152-4.15c-.488-.488-1.28-.488-1.768 0s-.488 1.28 0 1.768l5 5z" fill="limegreen" fill-rule="evenodd"/>
    </svg>
  </div>
  <div class="table-cell cell-feature">Personal contact person</div>
  <div class="table-cell">
    <svg width="18" height="18" viewBox="0 0 18 18" xmlns="http://www.w3.org/2000/svg">
      <title>check_blue</title>
      <path d="M6.116 14.884c.488.488 1.28.488 1.768 0l10-10c.488-.488.488-1.28 0-1.768s-1.28-.488-1.768 0l-9.08 9.15-4.152-4.15c-.488-.488-1.28-.488-1.768 0s-.488 1.28 0 1.768l5 5z" fill="limegreen" fill-rule="evenodd"/>
    </svg>
  </div>
  <div class="table-cell">
    <svg class="enterprise-check" width="18" height="18" viewBox="0 0 18 18" xmlns="http://www.w3.org/2000/svg">
      <title>check_blue</title>
      <path d="M6.116 14.884c.488.488 1.28.488 1.768 0l10-10c.488-.488.488-1.28 0-1.768s-1.28-.488-1.768 0l-9.08 9.15-4.152-4.15c-.488-.488-1.28-.488-1.768 0s-.488 1.28 0 1.768l5 5z" fill="limegreen" fill-rule="evenodd"/>
    </svg>
  </div>
  <div class="table-cell cell-feature">Pay only for what you use</div>
  <div class="table-cell">
    <svg width="18" height="18" viewBox="0 0 18 18" xmlns="http://www.w3.org/2000/svg">
      <title>check_blue</title>
      <path d="M6.116 14.884c.488.488 1.28.488 1.768 0l10-10c.488-.488.488-1.28 0-1.768s-1.28-.488-1.768 0l-9.08 9.15-4.152-4.15c-.488-.488-1.28-.488-1.768 0s-.488 1.28 0 1.768l5 5z" fill="limegreen" fill-rule="evenodd"/>
    </svg>
  </div>
  <div class="table-cell">
    <svg class="enterprise-check" width="18" height="18" viewBox="0 0 18 18" xmlns="http://www.w3.org/2000/svg">
      <title>check_blue</title>
      <path d="M6.116 14.884c.488.488 1.28.488 1.768 0l10-10c.488-.488.488-1.28 0-1.768s-1.28-.488-1.768 0l-9.08 9.15-4.152-4.15c-.488-.488-1.28-.488-1.768 0s-.488 1.28 0 1.768l5 5z" fill="limegreen" fill-rule="evenodd"/>
    </svg>
  </div>
  <div class="table-cell cell-feature">Real-time fee reporting</div>
  <div class="table-cell">
    <svg width="18" height="18" viewBox="0 0 18 18" xmlns="http://www.w3.org/2000/svg">
      <title>check_blue</title>
      <path d="M6.116 14.884c.488.488 1.28.488 1.768 0l10-10c.488-.488.488-1.28 0-1.768s-1.28-.488-1.768 0l-9.08 9.15-4.152-4.15c-.488-.488-1.28-.488-1.768 0s-.488 1.28 0 1.768l5 5z" fill="limegreen" fill-rule="evenodd"/>
    </svg>
  </div>
  <div class="table-cell">
    <svg class="enterprise-check" width="18" height="18" viewBox="0 0 18 18" xmlns="http://www.w3.org/2000/svg">
      <title>check_blue</title>
      <path d="M6.116 14.884c.488.488 1.28.488 1.768 0l10-10c.488-.488.488-1.28 0-1.768s-1.28-.488-1.768 0l-9.08 9.15-4.152-4.15c-.488-.488-1.28-.488-1.768 0s-.488 1.28 0 1.768l5 5z" fill="limegreen" fill-rule="evenodd"/>
    </svg>
  </div>
  <div class="table-cell cell-feature">Volume discounts</div>
  <div class="table-cell"></div>
  <div class="table-cell">
    <svg class="enterprise-check" width="18" height="18" viewBox="0 0 18 18" xmlns="http://www.w3.org/2000/svg">
      <title>check_blue</title>
      <path d="M6.116 14.884c.488.488 1.28.488 1.768 0l10-10c.488-.488.488-1.28 0-1.768s-1.28-.488-1.768 0l-9.08 9.15-4.152-4.15c-.488-.488-1.28-.488-1.768 0s-.488 1.28 0 1.768l5 5z" fill="limegreen"/>
    </svg>
  </div>
  <div class="table-cell cell-feature">Account management</div>
  <div class="table-cell"></div>
  <div class="table-cell">
    <svg class="enterprise-check" width="18" height="18" viewBox="0 0 18 18" xmlns="http://www.w3.org/2000/svg">
      <title>check_blue</title>
      <path d="M6.116 14.884c.488.488 1.28.488 1.768 0l10-10c.488-.488.488-1.28 0-1.768s-1.28-.488-1.768 0l-9.08 9.15-4.152-4.15c-.488-.488-1.28-.488-1.768 0s-.488 1.28 0 1.768l5 5z" fill="limegreen" fill-rule="evenodd"/>
    </svg>
  </div>
  <div class="table-cell cell-feature">Migration assistance</div>
  <div class="table-cell"></div>
  <div class="table-cell">
    <svg class="enterprise-check" width="18" height="18" viewBox="0 0 18 18" xmlns="http://www.w3.org/2000/svg">
      <title>check_blue</title>
      <path d="M6.116 14.884c.488.488 1.28.488 1.768 0l10-10c.488-.488.488-1.28 0-1.768s-1.28-.488-1.768 0l-9.08 9.15-4.152-4.15c-.488-.488-1.28-.488-1.768 0s-.488 1.28 0 1.768l5 5z" fill="limegreen" fill-rule="evenodd"/>
    </svg>
  </div>
  <div class="table-cell cell-feature">24/7 support</div>
  <div class="table-cell"></div>
  <div class="table-cell">
    <svg class="enterprise-check" width="18" height="18" viewBox="0 0 18 18" xmlns="http://www.w3.org/2000/svg">
      <title>check_blue</title>
      <path d="M6.116 14.884c.488.488 1.28.488 1.768 0l10-10c.488-.488.488-1.28 0-1.768s-1.28-.488-1.768 0l-9.08 9.15-4.152-4.15c-.488-.488-1.28-.488-1.768 0s-.488 1.28 0 1.768l5 5z" fill="limegreen" fill-rule="evenodd"/>
    </svg>
  </div>
</div>

@mixin border-radius($radius) {
  -webkit-border-radius: $radius;
  -moz-border-radius: $radius;
  -ms-border-radius: $radius;
  border-radius: $radius;
}

@mixin transition($args...) {
  -webkit-transition: $args;
  -moz-transition: $args;
  -ms-transition: $args;
  -o-transition: $args;
  transition: $args;
}

body {
  color: slategray;
}

.table {
  display: flex;
  flex-wrap: wrap;
  margin: 0 auto;
  padding: 2rem 0rem 0rem 0rem;
  max-width: 1100px;
}

.table-cell {
  box-sizing: border-box;
  flex-grow: 1;
  width: 100%;
  padding: 0.8em 1.2em;
  overflow: hidden;
  list-style-type: none;
  outline: 1px solid #ddd;
  text-align: center;
  font-weight: 300;
  margin: {
    top: 1px;
    left: 1px;
  }
  &:first-child {
  	outline: 1px solid #fff;
    background: transparent;
  	@media only screen and (max-width : 768px) {
			display: none;
		}
  }
  &:nth-child(3) {
    outline: 1px solid #30305b;
  }
  &:nth-child(-n+3) {
  	padding: {
  		top: 40px;
  		bottom: 40px;
  	}
  }
  > h3 {
    font-size: 26px;
  	margin: {
  		top: 0;
  		bottom: 3rem;
  	}
  }
  &.cell-feature {
	  text-align: left;
    font-size: 18px;
  }
  &.plattform {
    color: limegreen;
    a.btn {
      color: limegreen;
      &:hover {
        background-color: limegreen;
        border-color: limegreen;
        color: white;
      }
    }
  }
  &.enterprise {
    background-color: #30305b;
    color: #85bafc;
    a.btn {
      color: #85bafc;
      &:hover {
        background-color: #85bafc;
        border-color: #85bafc;
        color: #30305b;
      }
    }
  }
}

/* Table columns
================================== */
.table-cell  {
  width: calc(33.33% - 1px);
  &.cell-feature {
	  @media only screen and (max-width : 768px) {
		  width: 100%;
		  text-align: center;
	  }
  }
}

svg.enterprise-check path {
  fill: #30305b !important;
}

a.btn {
  border: 2px solid;
  padding: .6rem .9rem .6rem .9rem;
  font-weight: 400;
  text: {
    transform: uppercase;
    decoration: none;
  }
  @include transition(0.2s ease-in-out);
  @include border-radius(.3rem);
}

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External CSS

https://codepen.io/mathiesjanssen/pen/egKepQ.css

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